| (19) |
 |
|
(11) |
EP 0 324 566 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
01.08.1990 Bulletin 1990/31 |
| (43) |
Date of publication A2: |
|
19.07.1989 Bulletin 1989/29 |
| (22) |
Date of filing: 09.01.1989 |
|
| (51) |
International Patent Classification (IPC)4: B09B 5/00 |
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT NL |
| (30) |
Priority: |
14.01.1988 US 143891
|
| (71) |
Applicant: CHEMICAL WASTE MANAGEMENT, INC. |
|
Oak Brook
Illinois 60521 (US) |
|
| (72) |
Inventors: |
|
- Fochtman, Edward G.
Elmhurst
Illinois 60126 (US)
- Daley, Peter S.
Glen Ellyn
Illinois 60137 (US)
- Ader, Milton
Park Forest
Illinois 60466 (US)
- Plys, Albert G.
South Holland
Illinois 60473 (US)
- Swanstrom, Carl P.
Crestwood
Illinois 60445 (US)
|
| (74) |
Representative: Brooks, Nigel Samuel |
|
Hill Hampton
East Meon
Petersfield
Hampshire GU32 1QN
Petersfield
Hampshire GU32 1QN (GB) |
|
| |
|
| (54) |
Process and apparatus for separating organic contaminants from contaminated inert
materials |
(57) A method for economically separating organic contaminants such as volatile organic
chemicals (VOC's) and polychlorinated biphenyls (PCB's), even if the contaminants
are present at low concentrations, from inert materials such as soils or sludges,
comprising subjecting inert materials contaminated with organic compounds to a temperature
effective to volatilize the organic contaminants but below incineration temperature,
with continuous removal and condensation of evolved vapors, for a period of time sufficient
to effect the desired degree of separation of contaminants.